The four halogen lights all went out at the same instant. Fan continues to work. light switch relay is heard activating, but no lights.

Any ideas???

liquidoranges

08-14-2009 10:30 AM

IKEA by Whirlpool Range hood mystery

All four lights went off simultaneously. Wiring diagram indicates TWO transformers. is it likely these both failed at the same time, or is it a switch on the circuit board? pushing the light switch makes a relay on the board click as normal, but no lights.

I sure could use some advise, including how with my volt meter I could possibly test to determine which part is bad.

Gene

08-14-2009 06:33 PM

Check for 120 VAC to each transformer primary windings from the control board. If there is nothing wrong then check for 12 VAC from each transformer secondary windings. Post the results.

Per the wiring diagram, I located the power from the control board (P14 & P15). The two transformers are fed from this single point of contact. Voltage is present. Power is going to the transformers. From the step-down side (12v) there is nothing. This would suggest both transformers failed simultaneously? The light switch relay on the board gets very hot (just for info)

Gene

08-17-2009 11:49 AM

Have you disconnected the light wires from the transformers before measuring low voltage?

Gene.

liquidoranges

08-17-2009 11:53 AM

yes, single plug between transformers and lights: one transformer for each two lights. tested voltage with switch on, probing contacts at plug.